protected static Sequence getSequence(String expression) {
int start = 0, add = 2, max = -1, modVal = -1;
JsRegexp expressionRegExp =
new JsRegexp(
"^((odd|even)|([1-9]\\d*)|((([1-9]\\d*)?)n((\\+|\\-)(\\d+))?)|(\\-(([1-9]\\d*)?)n\\+(\\d+)))$");
JsObjectArray<String> pseudoValue = expressionRegExp.exec(expression);
if (!truth(pseudoValue)) {
return null;
} else {
if (truth(pseudoValue.get(2))) { // odd or even
start = (eq(pseudoValue.get(2), "odd")) ? 1 : 2;
modVal = (start == 1) ? 1 : 0;
} else if (JsUtils.truth(pseudoValue.get(3))) { // single digit
start = Integer.parseInt(pseudoValue.get(3), 10);
add = 0;
max = start;
} else if (truth(pseudoValue.get(4))) { // an+b
add = truth(pseudoValue.get(6)) ? Integer.parseInt(pseudoValue.get(6), 10) : 1;
start =
truth(pseudoValue.get(7))
? Integer.parseInt(
(pseudoValue.get(8).charAt(0) == '+' ? "" : pseudoValue.get(8))
+ pseudoValue.get(9),
10)
: 0;
while (start < 1) {
start += add;
}
modVal = (start > add) ? (start - add) % add : ((start == add) ? 0 : start);
} else if (truth(pseudoValue.get(10))) { // -an+b
add = truth(pseudoValue.get(12)) ? Integer.parseInt(pseudoValue.get(12), 10) : 1;
start = max = Integer.parseInt(pseudoValue.get(13), 10);
while (start > add) {
start -= add;
}
modVal = (max > add) ? (max - add) % add : ((max == add) ? 0 : max);
}
}
Sequence s = new Sequence();
s.start = start;
s.add = add;
s.max = max;
s.modVal = modVal;
return s;
}
public NodeList<Element> select(String sel, Node ctx) {
String selectors[] = sel.replace("\\s*(,)\\s*", "$1").split(",");
boolean identical = false;
JsNodeArray elm = JsNodeArray.create();
for (int a = 0, len = selectors.length; a < len; a++) {
if (a > 0) {
identical = false;
for (int b = 0, bl = a; b < bl; b++) {
if (JsUtils.eq(selectors[a], selectors[b])) {
identical = true;
break;
}
}
if (identical) {
continue;
}
}
String currentRule = selectors[a];
JsObjectArray<String> cssSelectors = selectorSplitRegExp.match(currentRule);
JsNodeArray prevElem = JsNodeArray.create(ctx);
for (int i = 0, slen = cssSelectors.length(); i < slen; i++) {
JsNodeArray matchingElms = JsNodeArray.create();
String rule = cssSelectors.get(i);
if (i > 0 && childOrSiblingRefRegExp.test(rule)) {
JsObjectArray<String> childOrSiblingRef = childOrSiblingRefRegExp.exec(rule);
if (JsUtils.truth(childOrSiblingRef)) {
JsObjectArray<String> nextTag = new JsRegexp("^\\w+").exec(cssSelectors.get(i + 1));
JsRegexp nextRegExp = null;
String nextTagStr = null;
if (JsUtils.truth(nextTag)) {
nextTagStr = nextTag.get(0);
nextRegExp = new JsRegexp("(^|\\s)" + nextTagStr + "(\\s|$)", "i");
}
for (int j = 0, jlen = prevElem.size(); j < jlen; j++) {
Node prevRef = prevElem.getNode(j);
String ref = childOrSiblingRef.get(0);
if (JsUtils.eq(">", ref)) {
getDescendantNodes(matchingElms, nextTagStr, prevRef);
} else if (JsUtils.eq("+", ref)) {
getSiblingNodes(matchingElms, nextTag, nextRegExp, prevRef);
} else if (JsUtils.eq("~", ref)) {
getGeneralSiblingNodes(matchingElms, nextTag, nextRegExp, prevRef);
}
}
prevElem = matchingElms;
clearAdded(prevElem);
rule = cssSelectors.get(++i);
if (new JsRegexp("^\\w+$").test(rule)) {
continue;
}
setSkipTag(prevElem, true);
}
}
JsObjectArray<String> cssSelector = cssSelectorRegExp.exec(rule);
SplitRule splitRule =
new SplitRule(
!JsUtils.truth(cssSelector.get(1)) || JsUtils.eq(cssSelector.get(3), "*")
? "*"
: cssSelector.get(1),
!JsUtils.eq(cssSelector.get(3), "*") ? cssSelector.get(2) : null,
cssSelector.get(4),
cssSelector.get(6),
cssSelector.get(10));
if (JsUtils.truth(splitRule.id)) {
Element domelem = Document.get().getElementById(splitRule.id.substring(1));
if (JsUtils.truth(domelem)) {
matchingElms = JsNodeArray.create(domelem);
}
prevElem = matchingElms;
} else if (JsUtils.truth(splitRule.tag) && !isSkipped(prevElem)) {
if (i == 0 && matchingElms.size() == 0 && prevElem.size() == 1) {
prevElem =
matchingElms =
JsNodeArray.create(getElementsByTagName(splitRule.tag, prevElem.getNode(0)));
} else {
NodeList<Element> tagCollectionMatches;
for (int l = 0, ll = prevElem.size(); l < ll; l++) {
tagCollectionMatches = getElementsByTagName(splitRule.tag, prevElem.getNode(l));
for (int m = 0, mlen = tagCollectionMatches.getLength(); m < mlen; m++) {
Node tagMatch = tagCollectionMatches.getItem(m);
if (!isAdded(tagMatch)) {
setAdded(tagMatch, true);
matchingElms.addNode(tagMatch);
}
}
}
prevElem = matchingElms;
clearAdded(prevElem);
}
if (matchingElms.size() == 0) {
break;
}
setSkipTag(prevElem, false);
if (JsUtils.truth(splitRule.allClasses)) {
String[] allClasses = splitRule.allClasses.replaceFirst("^\\.", "").split("\\.");
JsRegexp[] regExpClassNames = new JsRegexp[allClasses.length];
for (int n = 0, nl = allClasses.length; n < nl; n++) {
regExpClassNames[n] = new JsRegexp("(^|\\s)" + allClasses[n] + "(\\s|$)");
}
JsNodeArray matchingClassElms = JsNodeArray.create();
for (int o = 0, olen = prevElem.size(); o < olen; o++) {
Element current = prevElem.getElement(o);
String elmClass = current.getClassName();
boolean addElm = false;
if (JsUtils.truth(elmClass) && !isAdded(current)) {
for (int p = 0, pl = regExpClassNames.length; p < pl; p++) {
addElm = regExpClassNames[p].test(elmClass);
if (!addElm) {
break;
}
}
if (addElm) {
setAdded(current, true);
matchingClassElms.addNode(current);
}
}
}
clearAdded(prevElem);
prevElem = matchingElms = matchingClassElms;
}
if (JsUtils.truth(splitRule.allAttr)) {
JsObjectArray<String> allAttr = JsRegexp.match("\\[[^\\]]+\\]", "g", splitRule.allAttr);
JsRegexp[] regExpAttributes = new JsRegexp[allAttr.length()];
String[] regExpAttributesStr = new String[allAttr.length()];
JsRegexp attributeMatchRegExp =
new JsRegexp("(\\w+)(\\^|\\$|\\*|\\||~)?=?[\"']?([\\w\u00C0-\uFFFF\\s\\-_\\.]+)?");
for (int q = 0, ql = allAttr.length(); q < ql; q++) {
JsObjectArray<String> attributeMatch = attributeMatchRegExp.exec(allAttr.get(q));
String attributeValue =
JsUtils.truth(attributeMatch.get(3))
? attributeMatch.get(3).replaceAll("\\.", "\\.")
: null;
String attrVal =
attrToRegExp(attributeValue, (JsUtils.or(attributeMatch.get(2), null)));
regExpAttributes[q] = (JsUtils.truth(attrVal) ? new JsRegexp(attrVal) : null);
regExpAttributesStr[q] = attributeMatch.get(1);
}
JsNodeArray matchingAttributeElms = JsNodeArray.create();
for (int r = 0, rlen = matchingElms.size(); r < rlen; r++) {
Element current = matchingElms.getElement(r);
boolean addElm = false;
for (int s = 0, sl = regExpAttributes.length; s < sl; s++) {
addElm = false;
JsRegexp attributeRegexp = regExpAttributes[s];
String currentAttr = getAttr(current, regExpAttributesStr[s]);
if (JsUtils.truth(currentAttr) && currentAttr.length() != 0) {
if (attributeRegexp == null || attributeRegexp.test(currentAttr)) {
addElm = true;
}
}
if (!addElm) {
break;
}
}
if (addElm) {
matchingAttributeElms.addNode(current);
}
}
prevElem = matchingElms = matchingAttributeElms;
}
if (JsUtils.truth(splitRule.allPseudos)) {
JsRegexp pseudoSplitRegExp = new JsRegexp(":(\\w[\\w\\-]*)(\\(([^\\)]+)\\))?");
JsObjectArray<String> allPseudos =
JsRegexp.match("(:\\w+[\\w\\-]*)(\\([^\\)]+\\))?", "g", splitRule.allPseudos);
for (int t = 0, tl = allPseudos.length(); t < tl; t++) {
JsObjectArray<String> pseudo = pseudoSplitRegExp.match(allPseudos.get(t));
String pseudoClass =
JsUtils.truth(pseudo.get(1)) ? pseudo.get(1).toLowerCase() : null;
String pseudoValue = JsUtils.truth(pseudo.get(3)) ? pseudo.get(3) : null;
matchingElms = getElementsByPseudo(matchingElms, pseudoClass, pseudoValue);
clearAdded(matchingElms);
}
prevElem = matchingElms;
}
}
}
elm.pushAll(prevElem);
}
return JsUtils.unique(elm.<JsArray<Element>>cast()).cast();
}